



The TestEQ ETS-series thermal shock test chamber exposes a specimen to abrupt transitions between hot and cold zones to evaluate thermal shock resistance. A two-zone or three-zone layout is selected according to whether the specimen can be moved during the test.

Applications
- Semiconductors, ICs and electronic components
- PCB assemblies and solder joints
- Automotive electronics and EV power components
- Aerospace, defense and communication equipment
- New materials, glass, ceramics and composites
- Batteries and power modules
Two-zone and three-zone designs
- Two-zone system: the specimen basket moves vertically or horizontally between a pre-heated zone and a pre-cooled zone. Basket transfer time is ≤ 10 seconds, and temperature recovery is within specification typically in ≤ 5 minutes.
- Three-zone system: hot, cold and ambient zones are separate; the specimen can be kept stationary while air is switched between zones. Transition time is ≤ 3–10 seconds and mechanical stress from basket movement is eliminated.
- The three-zone layout favours precision electronic assemblies, semiconductor devices and aerospace components where repeatability and data consistency are important.

Configuration and features
- Temperature range -70 °C to +200 °C.
- Preheating range +60 °C to +200 °C; heating rate +60 °C to +200 °C ≤ 20 min.
- Cooling rate from +20 °C to -70 °C ≤ 30 min.
- Fast temperature transition and controlled recovery support repeated thermal shock cycling (>2000 cycles of continuous testing on supported configurations).
- PID control with touchscreen programming and RS-485 communication.
- Options include the number of basket positions, load capacity and test fixtures, selected against the specimen and load profile.
Specifications
Model range
Two-zone vertical basket chambers (ETS12 / ETS15)
| Parameter | ETS12-20A-L | ETS15-4.5A-L |
|---|---|---|
| Capacity | 2.1 L | 4.5 L |
| Internal dimension W×H×D | 120×150×120 mm | 150×150×200 mm |
| External dimension W×H×D | 1140×1785×1240 mm | 1200×1785×1320 mm |
| Basket capacity (uniform load) | 1.0 kg | 2.0 kg |
| Hot / cold zone internal dimension | 260×350×440 mm (40 L) | 290×350×520 mm (52 L) |
| High temperature | +150 °C (200 °C optional) | +150 °C (200 °C optional) |
| Low temperature | -65 °C | -65 °C |
Two-zone vertical basket chambers (ETS23 / ETS60 / ETS125)
| Parameter | ETS23 | ETS60 | ETS125 |
|---|---|---|---|
| Capacity | 0.023 m³ | 0.06 m³ | 0.125 m³ |
| Internal dimension W×H×D | 270×310×270 mm | 380×370×430 mm | 470×410×650 mm |
| External dimension W×H×D | 700×1534×1800 mm | 875×1895×1970 mm | 970×1895×2350 mm |
| Model (-40W-D) | ETS23-40W-D | ETS60-40W-D | ETS125-40W-D |
| Model (-55W-D) | — | ETS60-55W-D | ETS125-55W-D |
| Model (-65W-D) | ETS23-65W-D | ETS60-65W-D | ETS125-65W-D |
| Rated power (-40W) | 13 kW | 16 kW | 20 kW |
| Rated power (-55W) | — | 18 kW | 22 kW |
| Rated power (-65W) | 14 kW | 22 kW | 24 kW |
| Approx. weight | 520 kg | 960 kg | 1300 kg |
Three-zone chambers (ETS70 / ETS110 / ETS200 / ETS300)
| Parameter | ETS70 | ETS110 | ETS200 | ETS300 |
|---|---|---|---|---|
| Capacity | 0.07 m³ | 0.11 m³ | 0.2 m³ | 0.3 m³ |
| Internal dimension W×H×D | 410×460×370 mm | 650×460×370 mm | 650×460×670 mm | 970×460×670 mm |
| External dimension W×H×D | 1470×1860×1570 mm | 1710×1860×1570 mm | 1710×1860×1870 mm | 2030×1860×1870 mm |
| Model (-40W) | ETS70-40W | ETS110-40W | ETS200-40W | ETS300-40W |
| Model (-55W) | — | — | ETS200-55W | ETS300-55W |
| Model (-65W) | ETS70-65W | ETS110-65W | — | ETS300-65W |
| Rated power (-40W) | 26 kW | 29 kW | 37 kW | 37 kW |
| Rated power (-55W) | — | — | 38 kW | 38 kW |
| Rated power (-65W) | 38 kW | 42 kW | — | 58 kW |
| Approx. weight | 1050 kg | 1150 kg | 1400 kg | 1470 kg |
Two-zone horizontal basket chambers (ETS300 / ETS500 / ETS1000)
| Parameter | ETS300 | ETS500 | ETS1000 |
|---|---|---|---|
| Capacity | 0.30 m³ | 0.50 m³ | 1.00 m³ |
| Internal dimension W×H×D | 800×620×600 mm | 1000×800×620 mm | 1200×1000×800 mm |
| External dimension W×H×D | 2150×1980×1700 mm | 2550×2140×1980 mm | 2950×2400×2250 mm |
| Model (-40W-D) | ETS300-40W-D | ETS500-40W-D | ETS1000-40W-D |
| Model (-55W-D) | — | ETS500-55W-D | ETS1000-55W-D |
| Model (-65W-D) | ETS300-65W-D | — | — |
| Rated power (-40W) | 35 kW | 50 kW | 80 kW |
| Rated power (-55W) | — | 55 kW | 85 kW |
| Rated power (-65W) | 48 kW | — | — |
| Approx. weight | 1650 kg | 2250 kg | 3250 kg |
Common specifications
| Parameter | Value |
|---|---|
| Testing-zone temperature range | -40W(-D): +60 °C to +150 °C / 0 °C to -40 °C; -55W(-D): +60 °C to +150 °C / 0 °C to -55 °C; -65W(-D): +60 °C to +150 °C / 0 °C to -65 °C; optional -70W(-D): +60 °C to +200 °C / 0 °C to -70 °C |
| Transfer time (two-zone basket) | ≤ 10 s |
| Transition time (three-zone) | ≤ 3–10 s |
| Temperature stability | ±0.5 °C |
| Preheating range | +60 °C to +200 °C; heating rate +60 °C to +200 °C ≤ 20 min |
| Precooling range | -75 °C to 0 °C; cooling rate +20 °C to -70 °C ≤ 30 min (≤ 70 min for the three-zone configuration) |
| Heat-storing slot | RT to 200 °C / about 15 min (two-zone); RT to 200 °C / about 30 min (three-zone) |
| Cool-storing slot | RT to -70 °C / about 15 min (two-zone); RT to -70 °C / about 45 min (three-zone) |
| Recovery / conversion time | ≤ 0.5 to 3 min / ≤ 3 s (two-zone); ≤ 5 min / ≤ 5 s (three-zone) |
| Control precision / distribution accuracy | ±0.5 °C / ±2 °C |
| Temperature fluctuation / deviation / uniformity (three-zone) | ≤ ±0.5 °C / ≤ ±2.0 °C / ≤ 2.0 °C |
| Cooling system | Semi-hermetic double-stage compressor (water-cooled type); hermetic double-stage compressor (air-cooled type) |
| Control system | PLC + touch screen |
| Cycle life | > 2000 cycles of continuous testing |
| Power | AC 380 V, 3-phase, 5-line, 50/60 Hz |
| Options | LN₂ cooling to -196 °C, viewing window, large-volume custom chambers (up to 12,000 L, three-zone), remote monitoring (Modbus / IoT), semiconductor test mode (JEDEC) |
Model designations include the ETS series (for example ETS23-40W-D, ETS125-65W-D, ETS300-40W-D, ETS500-55W-D); the final specification depends on chamber model, transition requirement and test load.

Standards
Chambers can be configured for test programs based on MIL-STD-810H Method 503.7, IEC 60068-2-14, JESD22-A104, MIL-STD-883, GJB150.5A-2009, GJB360B-2009, GB/T 2424.13-2002 temperature shock test, GB 2423.1-2008 / IEC 6008-2-1-2007 low-temperature test methods, GB 2423.2-2008 high-temperature test methods, GB/T 10589-2008 (technical conditions for low-temperature test chambers), GB/T 11158-2008 (technical conditions and specifications for high-temperature test chambers), and ISO 16750.
To select a two-zone or three-zone configuration, contact us with the specimen, required temperature range and transition requirement. Related: Rapid Temperature Change Chamber , High and Low Temperature (Humidity) Test Chamber .